CN115319270B - Blade fixing device for linear friction welding of blisk - Google Patents
Blade fixing device for linear friction welding of blisk Download PDFInfo
- Publication number
- CN115319270B CN115319270B CN202210879964.2A CN202210879964A CN115319270B CN 115319270 B CN115319270 B CN 115319270B CN 202210879964 A CN202210879964 A CN 202210879964A CN 115319270 B CN115319270 B CN 115319270B
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- blade
- clamp
- left clamp
- clamping
- blisk
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- 238000003466 welding Methods 0.000 title claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 230000014759 maintenance of location Effects 0.000 claims 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000002452 interceptive effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/126—Workpiece support, i.e. backing or clamping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to a blade fixing device for linear friction welding of an integral blade disc, which comprises a left clamp and a right clamp which are assembled and arranged, wherein a clamping groove is formed in a joint surface between the left clamp and the right clamp, a blade is arranged in the clamping groove, a boss is arranged on the lateral surface of the left clamp in an outward protruding mode and used for reinforcing the structural strength of the left clamp, an inclined surface matched with the outer contour of a blade body of an adjacent blade on one side is arranged on the boss and used for avoiding interference with the blade body motion of the adjacent blade on one side, and an avoidance groove is formed in the lateral surface of the right clamp in an inward sunken mode and used for avoiding interference with the blade body motion of the adjacent blade on the other side. The left clamp and the right clamp are respectively provided with a corresponding avoiding structure with the adjacent blades, so that the clamp and the blades can be effectively prevented from moving and interfering in the linear friction welding process, and the structural strength of the left clamp is enhanced through the boss, so that the clamp has small volume and good structural strength.
Description
Technical Field
The invention relates to the technical field of manufacture of blisks, in particular to a blade fixing device for linear friction welding of blisks.
Background
The blisk is a novel structural member designed for meeting the requirements of high-performance aeroengines, integrates engine rotor blades and wheel discs, omits tenons, mortises, locking devices and the like in traditional connection, reduces the structural weight and the number of parts, avoids tenon airflow loss, improves pneumatic efficiency, greatly simplifies the engine structure, and is widely applied to military and civil aeroengines in various countries.
At present, the linear friction welding technology is mainly applied to manufacturing of titanium alloy blisk in an aircraft engine, the center of the blisk is a wheel disc (shown in fig. 1), a certain number of blades (shown in fig. 2) are uniformly distributed on the circumference of the wheel disc, each blade comprises a welding table 1, a clamping table 2 and a blade body 3, the welding table 1 is used for friction welding, the clamping table 2 is used for positioning and fixing the blades in a blade clamp and bearing welding load, and the welding table 1 of the blades is connected with the welding table 1 of the wheel disc by adopting the linear friction welding technology, so that the blades are welded to the wheel disc one by one. When the blade and the wheel disc are welded, the blade is installed in the blade clamp, and the wheel disc is installed in the wheel disc clamp. The welding load of the linear friction welding is very large, so that the blade clamp and the wheel disc clamp are required to have higher rigidity, the space between the blades is smaller, the external dimension of the blade clamp is required to be as small as possible for convenient installation and disassembly, and the two contradictory requirements of high rigidity and small dimension are simultaneously met for the blade clamp, so that the design difficulty is higher.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the invention provides a blade fixing device for linear friction welding of an integral blade disc, which comprises a left clamp and a right clamp which are assembled and arranged, wherein a clamping groove is formed in a joint surface between the left clamp and the right clamp, a blade is arranged in the clamping groove, a boss is arranged on the lateral surface of the left clamp in an outward protruding mode and used for reinforcing the structural strength of the left clamp, an inclined surface matched with the blade body outline of one-side adjacent blade is arranged on the boss and used for avoiding blade body movement interference of one-side adjacent blade, and an avoidance groove is formed in the lateral surface of the right clamp in an inward concave mode and used for avoiding blade body movement interference of the other-side adjacent blade.
Further, the clamping groove comprises a first clamping section and a second clamping section, the first clamping section is matched with the outer contour of the clamping table of the blade, and the second clamping section is matched with the outer contour of the blade body of the blade.
Further, the first clamping section is arranged on the right clamp.
Further, the second clamping section is in split type, wherein one part of the second clamping section is arranged on the left clamp, the other part of the second clamping section is arranged on the right clamp, and the second clamping section is respectively attached to two surfaces of the hinge body.
Further, a left groove is formed in the left clamp and used for avoiding interference with movement of a clamping table of the blade adjacent to one side.
Further, a right groove is formed in the right clamp and used for avoiding interference with movement of a clamping table of the blade adjacent to the other side.
Further, the combination surface of the left clamp is concave inwards to form a concave surface, and the combination surface of the right clamp is convex outwards to match with the concave surface to form a convex surface.
Further, the left clamp and the right clamp are connected through screws.
Further, a left support block is arranged on the back surface of the left clamp and used for reinforcing the structural strength of the left clamp.
Further, a right support block is arranged on the back surface of the right clamp and used for reinforcing the structural strength of the right clamp.
In summary, the left clamp and the right clamp are mutually assembled to arrange the blade in the clamping groove, and the left clamp, the right clamp and the adjacent blade are respectively provided with corresponding avoiding structures, wherein the structures comprise inclined planes on the bosses and the avoiding grooves, so that the clamp and the blade can be effectively prevented from moving and interfering in the linear friction welding process, and the structural strength of the left clamp is enhanced through the bosses, so that the clamp has small volume and good structural strength.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a disk of a blisk;
FIG. 2 is a blade of a blisk;
FIG. 3 is a schematic perspective view of a blade holding device for linear friction welding of blisks;
FIG. 4 is a schematic view of another side perspective of FIG. 3;
FIG. 5 is a schematic perspective view of a left clamp;
FIG. 6 is a schematic perspective view of the right clamp;
FIG. 7 is a schematic view of the back structure of the left clamp;
FIG. 8 is a schematic view of the back structure of the right clamp;
In the figure: 1. a welding table; 2. clamping table; 3. a leaf body; 4. a left clamp; 5. a right clamp; 6. clamping grooves; 7. a boss; 8. an inclined plane; 9. an avoidance groove; 10. a left groove; 11. a right groove; 12. a concave surface; 13. a convex surface; 14. a screw; 15. a left support block; 16. a right support block; 17. a first clamping section; 18. and a second clamping section.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, substitutions and improvements in parts, components and connections without departing from the spirit of the invention.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 8, an embodiment of the present invention provides a blade fixing device for linear friction welding of a blisk, which includes a left clamp 4 and a right clamp 5 that are assembled, a clamping groove 6 is provided on a joint surface between the left clamp 4 and the right clamp 5, a blade is disposed in the clamping groove 6, a boss 7 is provided on an outward bulge of a side surface of the left clamp 4, the boss 7 is used for reinforcing structural strength of the left clamp 4, an inclined surface 8 matched with an outer contour of a blade body 3 of a blade adjacent to one side is provided on the boss 7, so as to avoid interference with the blade body 3 of the blade adjacent to one side, and an avoidance groove 9 is provided on an inward bulge of a side surface of the right clamp 5, so as to avoid interference with the blade body 3 of the blade adjacent to the other side. Through the mutual assembly of left anchor clamps 4 and right anchor clamps 5, be in with the blade setting clamping inslot 6, left side anchor clamps 4 with right anchor clamps 5 all are provided with corresponding structure of dodging with the blade that is close on, and including inclined plane 8 on boss 7 and dodging groove 9, can effectively avoid the in-process anchor clamps of linear friction welding and blade to take place the motion interference, strengthen the structural strength of left anchor clamps 4 through boss 7 moreover, still have better structural strength when making the anchor clamps compromise small.
In some embodiments, the clamping groove 6 includes a first clamping section 17 and a second clamping section 18, where the first clamping section 17 is matched with the outer contour of the clamping table 2 of the blade, so that the clamping table 2 can be well clamped and fixed, and the second clamping section 18 is matched with the outer contour of the blade body 3 of the blade, so that the blade body 3 can be well clamped and fixed.
In some embodiments, the first clamping section 17 is disposed on the right clamp 5, and since the right clamp 5 is higher in structural strength than the left clamp 4, disposing the first clamping section 17 on the right clamp 5 reduces the strength weakening of the left clamp 4.
In some embodiments, the second clamping section 18 is provided in a split manner, wherein a part of the second clamping section is provided on the left clamp 4, and the other part of the second clamping section is provided on the right clamp 5, and is respectively attached to two surfaces of the blade body 3, and the blade body 3 is clamped and fixed by the second clamping section 18, so that the blade body 3 and the clamping table 2 are prevented from breaking during the intense motion of linear friction welding.
In the above embodiment, all the welding tables 1 of the wheel disc are numbered sequentially, and if a mode of welding one blade next to another is adopted, the welding of all the blades cannot be realized because the clamping table 2 of the welded blade has a large size and the blade clamp can interfere with movement. Only can all blades with odd serial numbers be welded firstly, after welding, the blisk is detached from the blisk clamp and is installed on the numerical control machining center, and the welded blade clamping table 2 with the odd serial numbers and the welding table 1 are milled and removed, so that the problem of interference between the clamping table 2 and the blade clamp is solved.
After machining, the blisk is detached from the numerical control machining center and is mounted on a wheel disc clamp of the linear friction welding equipment again, and between the blades with odd numbers, the blades with even numbers are welded.
After welding, the blisk is detached from the blisk clamp, and the welded blade clamping tables 2 with even numbers and part of the welding tables 1 are milled and removed on the numerical control machining center.
If the blisk has an even number of blades, two welds and tooling are required, and most blisks have an odd number of blades, three welds and tooling are required (a third weld only welds the last blade, and a third tooling only processes the clamping table 2 and the welding table 1 of the last blade).
For each embodiment, the current blisk manufacturing procedure is more, and needs to be installed and disassembled for many times, and detection is needed after each time of welding and processing, so that the processing period is long, the processing cost is high, and the consistency of welding precision is not guaranteed due to the fact that the blisk is disassembled and assembled for many times. Therefore, in some embodiments, the left groove 10 is provided on the left fixture 4, so as to avoid the interference between the motion of the clamping table 2 of the adjacent blade on one side, and compared with the previous embodiments, the welding mode of one blade next to one blade can be adopted, but the last blade needs to be milled and removed from the clamping table 2 and the welding table 1 of the adjacent blade during welding, so that the problem of the interference between the clamping table 2 and the blade fixture is solved.
In some embodiments, the right groove 11 is provided on the right clamp 5 to avoid the interference of movement of the clamping table 2 adjacent to the blade on the other side, and in contrast to the above embodiments, a method of welding one blade to another blade may be adopted, and no interference of movement will occur when welding the last blade, which is specifically described that the defining sequence of the embodiment and the above embodiments may be interchanged.
In some embodiments, the combination surface of the left clamp 4 is concave inwards to form a concave surface 12, the combination surface of the right clamp 5 is convex outwards and matched with the concave surface 12 to form a convex surface 13, and the concave surface 12 can bind the convex surface 13 in the vertical direction through mutual engagement of the concave surface 12 and the convex surface 13, so that the bearing capacity in the vertical direction is improved, the stress deformation in the vertical direction is reduced, and the overall structural strength is improved.
In some embodiments, the left clamp 4 and the right clamp 5 are connected by screws 14, i.e. the left clamp 4 and the right clamp 5 are connected as one body by four screws 14, ensuring clamping of the blade by the clamps during linear friction welding.
In some embodiments, the back surface of the left clamp 4 is provided with a left supporting block 15, which is used for reinforcing the structural strength of the left clamp 4, the left supporting block 15 can be made of a material with higher strength, and is fixed on the back surface of the left clamp 4 through a screw 14, and the shape of the left supporting block 15 does not interfere with each part of the blade, so that the capability of the clamp to bear upsetting force in the horizontal direction is significantly increased.
In some embodiments, the back surface of the right clamp 5 is provided with a right supporting block 16 for reinforcing the structural strength of the right clamp 5, the right supporting block 16 may be made of a material with higher strength, and is fixed on the back surface of the right clamp 5 by a screw 14, and the shape of the right supporting block 16 does not interfere with each part of the blade, so that the capability of the clamp to bear the upsetting force in the horizontal direction is significantly increased.
It should be understood that, in the present specification, each embodiment is described in an incremental manner, and the same or similar parts between the embodiments are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. For embodiments of the method, reference may be made to the description of parts of embodiments of the apparatus. The invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known method techniques is omitted here for the sake of brevity.
The above description is only an example of the present application and is not limited to the present application. Various modifications and alterations of this application will become apparent to those skilled in the art without departing from the scope of this application. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (6)
1. A blade fixing device of linear friction welding of blisk, its characterized in that: the left clamp and the right clamp are assembled, a clamping groove is formed in a joint surface between the left clamp and the right clamp, the blade is arranged in the clamping groove, a boss is arranged on the lateral surface of the left clamp in an outward protruding mode and used for reinforcing structural strength of the left clamp, an inclined surface matched with the outer contour of the blade body of the blade adjacent to one side is arranged on the boss and used for avoiding interference with the blade body motion of the blade adjacent to one side, and an avoidance groove is formed in the lateral surface of the right clamp in an inward sunken mode and used for avoiding interference with the blade body motion of the blade adjacent to the other side; the clamping groove comprises a first clamping section and a second clamping section, the first clamping section is matched with the outer contour of the clamping table of the blade, and the second clamping section is matched with the outer contour of the blade body of the blade; the combination surface of the left clamp is concave inwards to form a concave surface, and the combination surface of the right clamp is convex outwards and matched with the concave surface to form a convex surface; the back of the left clamp is provided with a left supporting block for reinforcing the structural strength of the left clamp; the back of right anchor clamps is provided with right supporting shoe for strengthen right anchor clamps's structural strength.
2. A blisk linear friction welded blade retention device as defined in claim 1, wherein: the first clamping section is arranged on the right clamp.
3. A blisk linear friction welded blade retention device as defined in claim 2, wherein: the second clamping section is split type, one part of the second clamping section is arranged on the left clamp, the other part of the second clamping section is arranged on the right clamp, and the second clamping section is respectively attached to two surfaces of the hinge body.
4. A blisk linear friction welded blade retention device as defined in claim 1, wherein: the left clamp is provided with a left groove for avoiding interference with the movement of the clamping table of the blade adjacent to one side.
5. A blisk linear friction welded blade retention device as defined in claim 1, wherein: the right clamp is provided with a right groove for avoiding interference with the movement of the clamping table of the blade adjacent to the other side.
6. A blisk linear friction welded blade retention device as defined in claim 1, wherein: the left clamp and the right clamp are connected through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210879964.2A CN115319270B (en) | 2022-07-25 | 2022-07-25 | Blade fixing device for linear friction welding of blisk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210879964.2A CN115319270B (en) | 2022-07-25 | 2022-07-25 | Blade fixing device for linear friction welding of blisk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115319270A CN115319270A (en) | 2022-11-11 |
| CN115319270B true CN115319270B (en) | 2024-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210879964.2A Active CN115319270B (en) | 2022-07-25 | 2022-07-25 | Blade fixing device for linear friction welding of blisk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115319270B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0513669A2 (en) * | 1991-05-17 | 1992-11-19 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Friction welding method for fixing blades on a turbine wheel of a fluid machine |
| CN103331515A (en) * | 2013-06-21 | 2013-10-02 | 中国航空工业集团公司北京航空制造工程研究所 | Linear friction welding method for manufacturing blisk |
| CN203418323U (en) * | 2013-04-18 | 2014-02-05 | 珠海格力电器股份有限公司 | Machining fixture used for wire cut electrical discharge machine |
| CN206146738U (en) * | 2016-09-26 | 2017-05-03 | 昆明理工大学 | III type bullet strip fatigue test auxiliary device |
| CN206795294U (en) * | 2017-04-19 | 2017-12-26 | 成都飞机工业（集团）有限责任公司 | A kind of tower built-up jig of digital control processing |
| CN109262132A (en) * | 2018-11-05 | 2019-01-25 | 中国航空制造技术研究院 | A kind of integral blade disk swings friction welding apparatus and method |
| CN113738762A (en) * | 2021-08-24 | 2021-12-03 | 浙江万鼎精密科技股份有限公司 | Double-boss deep petal type high-performance hub bearing flange and machining method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008017495B8 (en) * | 2008-04-04 | 2015-01-15 | Rolls-Royce Deutschland Ltd & Co Kg | Method of making or repairing integrally bladed rotors |
-
2022
- 2022-07-25 CN CN202210879964.2A patent/CN115319270B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0513669A2 (en) * | 1991-05-17 | 1992-11-19 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Friction welding method for fixing blades on a turbine wheel of a fluid machine |
| CN203418323U (en) * | 2013-04-18 | 2014-02-05 | 珠海格力电器股份有限公司 | Machining fixture used for wire cut electrical discharge machine |
| CN103331515A (en) * | 2013-06-21 | 2013-10-02 | 中国航空工业集团公司北京航空制造工程研究所 | Linear friction welding method for manufacturing blisk |
| CN206146738U (en) * | 2016-09-26 | 2017-05-03 | 昆明理工大学 | III type bullet strip fatigue test auxiliary device |
| CN206795294U (en) * | 2017-04-19 | 2017-12-26 | 成都飞机工业（集团）有限责任公司 | A kind of tower built-up jig of digital control processing |
| CN109262132A (en) * | 2018-11-05 | 2019-01-25 | 中国航空制造技术研究院 | A kind of integral blade disk swings friction welding apparatus and method |
| CN113738762A (en) * | 2021-08-24 | 2021-12-03 | 浙江万鼎精密科技股份有限公司 | Double-boss deep petal type high-performance hub bearing flange and machining method thereof |
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| Publication number | Publication date |
|---|---|
| CN115319270A (en) | 2022-11-11 |
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